realtek audio ac'97 drivers makes sounds come out garbled

[camnor]

upon updating kernel during the ubuntu gutsy to heron upgrade (version 7.10 to 8.04), the sound drivers seem not to function as they did in the older kernel. the sound comes out all garbled and sounds like my sound card is broken but upon reverting to the older kernel, the sound returns to a quality state

[Nick Ellery (nick.ellery)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it, because your description didn't include enough information.

Please include the information requested from the "Reporting Sound Bugs" section of [WWW] https://wiki.ubuntu.com/DebuggingSoundProblems as separate attachments.

[camnor (camnor)]

Package: linux-ubuntu-modules-2.6.24-19-generic
Status: install ok installed
Priority: optional
Section: base
the output for dpkg -s linux-ubuntu-modules-$(uname -r)
Installed-Size: 15280
Maintainer: Ubuntu Kernel Team <email address hidden>
Architecture: i386
Source: linux-ubuntu-modules-2.6.24
Version: 2.6.24-19.28
Provides: ndiswrapper-modules-1.9
Depends: linux-image-2.6.24-19-generic
Pre-Depends: dpkg (>= 1.10.24)
Description: Ubuntu supplied Linux modules for version 2.6.24 on x86/x86_64
 This package contains modules supplied by Ubuntu for Linux kernel 2.6.24 on
 x86/x86_64.
 .
 You likely do not want to install this package directly. Instead, install
 the linux-generic meta-package, which will ensure that upgrades work
 correctly, and that supporting packages are also installed.

attached find the output from uname -a > uname-a.log

even when running a sudo command or logged in as root i could not process the ./alsa-info.sh --no-upload command it denied permission so i followed the manual steps and here is my output

**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30bb]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
 Latency: 0
 Capabilities: <access denied>

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
 Subsystem: Hewlett-Packard Company Unknown device [103c:30bb]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
 Latency: 0
 Interrupt: pin A routed to IRQ 17
 Region 0: Memory at d8100000 (32-bit, non-prefetchable) [size=512K]
 Region 1: I/O ports at 1800 [size=8]
 Region 2: Memory at c0000000 (32-bit, prefetchable) [size=256M]
 Region 3: Memory at d8200000 (32-bit, non-prefetchable) [size=256K]
 Capabilities: <access denied>

00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30bb]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
 Latency: 0
 Region 0: Memory at d8180000 (32-bit, non-prefetchable) [size=512K]
 Capabilities: <access denied>

00:1b.0 Audio device [0403]: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller [8086:27d8] (rev 02)
 Subsystem: Hewlett-Packard Company Unknown...

[camnor (camnor)]

here is that last output file

[Nick Ellery (nick.ellery)]

Thanks for attaching these. Please attach a log file similar to the two already attached for 'dpkg -s linux-ubuntu-modules-$(uname -r)'. It makes it much easier to read through.

[camnor (camnor)]

when i enter that command it gives a text output that looks like this

ron@ron-laptop:~$ dpkg -s linux-ubuntu-modules-$(uname -r)
Package: linux-ubuntu-modules-2.6.24-19-generic
Status: install ok installed
Priority: optional
Section: base
Installed-Size: 15280
Maintainer: Ubuntu Kernel Team <email address hidden>
Architecture: i386
Source: linux-ubuntu-modules-2.6.24
Version: 2.6.24-19.28
Provides: ndiswrapper-modules-1.9
Depends: linux-image-2.6.24-19-generic
Pre-Depends: dpkg (>= 1.10.24)
Description: Ubuntu supplied Linux modules for version 2.6.24 on x86/x86_64
 This package contains modules supplied by Ubuntu for Linux kernel 2.6.24 on
 x86/x86_64.
 .
 You likely do not want to install this package directly. Instead, install
 the linux-generic meta-package, which will ensure that upgrades work
 correctly, and that supporting packages are also installed.

[Nick Ellery (nick.ellery)]

Simply copy and paste that into a text editor, save it as a .txt file, and attach it.

[camnor (camnor)]

here it is

[Nick Ellery (nick.ellery)]

Thanks for your report. Confirming and assigning to the respective team.

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[Mads Konradsen (mads-hk)]

I also have this problem with my Realtek 97 drivers, running Intrepid beta, fully updated!

[Mads Konradsen (mads-hk)]

As said before i have the same problem, its easy to here when the bass comes in.... I have attached my alsa results.

[Mads Konradsen (mads-hk)]

I tried to downgrade, and actually with Ubuntu 8.04 and kernel 2.6.24-21, the sound is pretty normal...

[Neil (neilg)]

I am running Intrepeid Ibex right now, Kernal 2.6.27-9-generic, and am having problems with my laptop (Acer TravelMate 6292). As the "Reporting Sound Bugs" section of Debugging Sound Problems page https://wiki.ubuntu.com/DebuggingSoundProblems
 says, I used to alsa-info.sh to generate a link:

http://www.alsa-project.org/db/?f=6322ce83b2b66a1fd1944487b6939bf98cee47f3

The contents of the link are also attached as alsa-info.txt

Please let me know if you need any more information to resolve this problem.

[camnor (camnor)]

after much testing, I went to check the sound settings, and one of the sliders was set all the way to the top, making the sound come out garbled. If you have a similar problem, have a quick look at your sound settings and see what the sliders are set to. Being as I did not set these settings myself, it was probably something that happened upon updating.

[Neil (neilg)]

Yes, after reading some threads on the Ubuntu Forum, I heard that adjusting the PCM slider fixed the problem for some. Although when I adjust the PCM slider (as well all the others), the distortion does not go away, it just gets quieter.

Another thing that I noticed is the sound when Ubuntu first starts up (when you are brought to the long in screen) is fine. It's after you log on that you begin to hear the distorted sound.

[Mads Konradsen (mads-hk)]

Neil > That's correct... The login sound is just fine... But after...

[kernel-janitor (kernel-janitor)]

This bug report was marked as Triaged a while ago but has not had any updated comments for quite some time. Please let us know if this issue remains in the current Ubuntu release, http://www.ubuntu.com/getubuntu/download . If the issue remains, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]